PA DEP certificationTesting #3445
Radon in well water testing in York County
A radon in well water test checks the water from your private well, not your air. 1 PA DEP-certified radon tester listed here says on its website that it tests well water for radon.
Not sure you need it? Read is there radon in your well water?
Test the air in your home
Air at 4 pCi/L or higher? Test your well water
Or, if you're concerned, consider testing both
Which Radon Testers Test Well Water in York County?
This PA DEP-certified tester says on its website that it also tests well water for radon. Ask which lab analyzes the water.
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Sorted by number of Google reviews.
How Is a Well Water Radon Test Different From an Air Test?
It uses different devices and steps, PA DEP's consumer guide (revised 2014) says. DEP's guides don't set out those steps, or say which certification covers a water test or the lab that analyzes it.
Pennsylvania radon office
DEP's consumer guide says its radon office can help you get a water test kit and understand your result.
What Should You Ask a Well Water Radon Tester?
Their certification number, how they take the sample, and which lab analyzes it.
What's your PA DEP certification number?
Check it on PA DEP's Radon Services Directory, which DEP updates monthly. DEP also says to check for a current DEP ID card or certificate.
How do you take the water sample?
Water tests don't use the same devices or steps as air tests.
Which lab analyzes it, and what is it certified for?
DEP's radon guides don't cover water labs. If you're unsure, call the radon office.
Common Questions About Radon in Well Water Testing
Should I test my well water before my air?
Usually not. DEP's citizen's guide says to test the air first, then the water if the air shows a radon problem. The consumer guide says a concerned well owner can test both.
Does PA DEP give a limit for radon in well water?
Not in its consumer guide. For drinking water standards, it says to call the radon office at 800-237-2366 or EPA's Drinking Water Hotline at 800-426-4791.
Keep Reading About Radon Testing
Sources
- PA DEP: Pennsylvania Citizen's Guide to Radon (2900-BK-DEP0375)
- PA DEP: Pennsylvania Consumer's Guide to Radon Reduction
- PA DEP: Pennsylvania Home Buyer's and Seller's Guide to Radon
- PA DEP Radon Services Directory
Page last updated Oct 2026.